Compara mètodes

	Experiment factorial fraccionat pilot	Experiment factorial fraccionat
Camp	Disseny experimental	Disseny experimental
Família	Process / pipeline	Process / pipeline
Any d'origen	1950s–1960s (fractional factorial foundation); pilot study integration formalized in 20th century DOE practice	1945 (Finney); broader development 1950s–1970s by Box, Hunter
Autor original	Box, Hunter & Hunter (fractional factorial); pilot study concept developed broadly in industrial and clinical experimentation	D. J. Finney (formal development); foundations in Ronald Fisher's factorial design work
Tipus	Experimental screening design (pilot phase)	Quantitative experimental design
Font seminal	Montgomery, D. C. (2017). Design and Analysis of Experiments (9th ed.). Wiley. ISBN: 978-1119492443	Box, G. E. P., Hunter, J. S., & Hunter, W. G. (2005). Statistics for Experimenters: Design, Innovation, and Discovery (2nd ed.). Wiley-Interscience. ISBN: 978-0471718130
Àlies	pilot FFE, screening pilot design, pilot fractional factorial, pilot FF screening study	fractional factorial design, FFD, 2^(k-p) design, fractional replication
Relacionats	5	4
Resum	A pilot fractional factorial experiment is a small-scale preliminary study that uses a fractional factorial design — testing only a subset of all possible factor combinations — to screen multiple factors simultaneously before committing to a full-scale investigation. It provides early estimates of effect sizes, variance, and feasibility at substantially reduced cost and participant burden compared to a full factorial pilot or a full-scale trial.	A fractional factorial experiment is a resource-efficient experimental design that tests only a carefully chosen fraction of all possible factor-level combinations. By exploiting the principle that high-order interactions are usually negligible, it identifies the main effects and low-order interactions of k factors using far fewer runs than a full factorial design — making it the workhorse of industrial and engineering screening experiments.